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In Chemistry: 15.00 mL of NaOH is obtained from a dispensette. Before titrating with 0.2500M HCL the initial volume of acid in the buret is read as 2.08 mL. At the end point the final volume of acid in the buret is 25.20 mL. What is the concentration of the NaOH.
Calculate the pH of each of the following solutions ( Ka and Kb values are given in Appendix D in the textbook). 0.115 M hydrogen chromate ion (HCrO4^-)
In combustion studies of the use of H2 as an alternative fuel, HO is sometimes formed in flames by the reaction, H(g) + 1/2 O2(g) HO(g)
the standard molar enthalpy of vaporization for water is 40.79kj/mol. what mass of steam is required to release 500. kj of energy upon condensation.
At 48 degrees C, dinitrogen tetroxide decomposes to a nitrogen dioxide with a rate constant of 1.5x10^7 S^-1. If the activation energy is 55 kJ/mol, determine the rate constant at 26 degree C
When a sky diver free-falls through the air, the process is a. non-spontaneous because he is accelerating due to the force applied by gravity. b. non-spontaneous because he is losing potential energy. c non-spontaneous because he had planned the j..
What will happen to the equilibrium as OH- ions are added?
The human body obtains 1078 kJ from a candy bar. If this energy were used to vaporize water at 100°C, how much water in liters could be vaporized
Gas was obtained by boiling liquid nitrogen stored in a 175.0 L tank. What volume ofN2 is released at 0.940 atm of pressure and 25 C from a tank full of liquid N2(d=0.808g/mol)
what is the main overall driving force for any spontaneous reaction or
Solid sodium iodide is slowly added to a solution that is 0.0050 M Pb2+ and 0.0050 M Ag+. [Ksp (PbI2) = 1.4 × 10-8; Ksp (AgI) = 8.3 × 10-17] Calculate the Ag+ concentration when PbI2 just begins to precipitate.
If a first-order reaction has a rate constant of 2.11x 10-1s-1 at a temperature of 22.3°C, what would the value of k be if the reaction temperature was changed to 65.7°C given
What isthe pressure inside of the cylinder in kilopascals at 20 degrees C
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